""" 
@Version: 0.1
@FileName    :    grade
@Author      :    kx
@CreateTime  :    2021/7/5 17:56 
@Description :   百分制成绩转等级制成绩 
"""

score = float(input('请输入成绩：'))
if score >= 90:
    grade = 'A'
elif score >= 80:
    grade = 'B'
elif score >= 70:
    grade = 'C'
elif score >= 60:
    grade = 'D'
else:
    grade = 'E'
print('对应的等级是：', grade)
